Current-mode Third-order Quadrature Oscillator Using VDTAs and Grounded Capacitors

被引：0
|
作者：
Phatsornsiri, Punnavich [1 ]
Lamun, Panit [2 ]
Kumngern, Montree [1 ]
Torteanchai, Usa [3 ]
机构：
[1] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Bangkok 10520, Thailand
[2] King Mongkuts Inst Technol Ladkrabang, Sch Engn, Chumphon 86160, Thailand
[3] Civil Aviat Training Ctr, Avion Div, Bangkok 10900, Thailand
来源：
2014 FOURTH JOINT INTERNATIONAL CONFERENCE ON INFORMATION AND COMMUNICATION TECHNOLOGY, ELECTRONIC AND ELECTRICAL ENGINEERING (JICTEE 2014) | 2014年
关键词：
current-mode circuit; quadrature oscillator; Voltage Differencing Transconductance Amplifier (VDTA);
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a novel electronically tunable current-mode third-order quadrature oscillator based on voltage differencing transconductance amplifier (VDTA). The proposed oscillator is constructed using two VDTAs and three grounded capacitors, which is advantageous for integrated circuit implementation. The circuit provides two current outputs with 90 degrees phase difference from high output impedance terminals. The condition of oscillation and the frequency of oscillation can be electronically tuned by adjusting the bias current of the VDTAs. The sensitivity studies of the circuit have been carried out. PSPICE simulations with 0.35 mu m TSMC CMOS process parameters are given to confirm the theoretical analysis.
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页数：4
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